Table 3.

Comparison of PSQI component 5 subitems’ results in CMT patients and healthy controls

	CMT patients (n = 253)	Controls (n = 58)	p value
1. Cannot get to sleep within 30 min, n (%)	154 (61%)	34 (59%)	n.s
2. Wake up in the middle of the night or early morning, n (%)	221 (87%)	43 (74%)	n.s
3. Have to get up to use the bathroom, n (%)	184 (73%)	39 (67%)	n.s
4. Cannot breathe comfortably, n (%)	80 (32%)	6 (10%)	0.010
5. Cough or snore loudly, n (%)	126 (50%)	30 (52%)	n.s
6. Feel too cold, n (%)	125 (49%)	13 (22%)	0.002
7. Feel too hot, n (%)	150 (59%)	20 (34%)	0.007
8. Have bad dreams, n (%)	136 (54%)	25 (43%)	n.s
9. Have pain, n (%)	177 (70%)	25 (43%)	0.003
10. Other reasons, n (%)	48 (19%)	8 (12%)	n.s
Cramps, n (%)	7 (3%)	0	n.s
Anxiety/stress, n (%)	34 (13%)	6 (10%)	n.s
Paresthesias, n (%)	7 (3%)	1 (2%)	n.s

P values for significant difference are reported in bold

CMT Charcot–Marie–Tooth disease, ns not significant

*p value calculated using the Fisher’s exact test. p values were adjusted using the Bonferroni correction